Host: The Ceramic Society of Japan
Indentation-induced densification of soda-lime silicate glass is investigated using different types of indenters and an atomic force microscope (AFM). Indentation deformation mechanism of glass under an indenter can be divided into two modes; plastic (or shear) flow and densification. Densified region of indentation impression can be almost completely recovered by thermal annealing at a temperature nearby Tg. Using this technique, the indenter-shape dependence of densification contribution to the total indentation volume is obtained. As a result, it is shown that a sharper indenter results in shear flow, and that a blunter indenter leads to densification under the indenter.
